Initial commit, including:
Data sets, in the folder Data, including sorted, random, and backwards sets;
sort-main.cpp, a common file which can be linked with any sorting algorithm;
sort.h, the header specifying the sort() function for each algorithm to implement;
selection-sort.cpp, the containing the first algorithm, selection-sort;
a makefile, which can create the program for any algorithm, provided the file name ends in sort.cpp; and
a timing script written in bash, which, given an algorithm, times its performance on each of the sets in the data/ subdirectory
Small fixes to errors caught while proofreading
Fix small errors in Makefile and random number generation